
Chinese environmental policy becomes strict, which causes increasing production cost from tantalum and niobium smelters
----Interview with Yi Chen
General Manager
Hengyang King Xing Lifeng Materials Co., Ltd.
General Manager
Hengyang King Xing Lifeng Materials Co., Ltd.
Hengyang King Xing Lifeng Materials Co., Ltd. was set up on December, 1993, which was one of the first plants engaged in tantalum and niobium production. It is a private sino-foreign joint venture which owns many core technologies on the production of tantalum oxide, niobium oxide and potassium fluotantalate. The main products of the company are tantalum and niobium related oxide and compound, electromagnetic and lighting chemical new materials.
Asian Metal: Hi Mr Chen, Thank you for taking part in this interview. Could you please give us a brief introduction about your company?
Chen: Our company mainly produces tantalum and niobium oxide and related compound. In order to satisfy the new environmental requirements, we are upgrading environmental protection machines and still in trial production stage, with an output of around 20tpm. The annual production capacity will reach 700-800t after we return to normal production in the future.

Asian Metal: As the Chinese environmental policy becomes stricter these years, is there any influence on the production for tantalum and niobium smelters in China?
Chen: The new environmental protection policy has a big influence on the domestic smelters. For example, it needs to invest a lot of money, time and efforts in upgrading new machines and new production lines, consuming qualified raw materials and so on. For the increase for environmental protection cost in the total production cost, tantalum oxide and potassium fluotantalate production cost increases by around 1.5% and niobium oxide increases by around 6-7%.

Asian Metal: In order to satisfy the new environmental protection requirement from Chinese government, does the plant take any actions?
Chen: We invest a lot of money and efforts upgrading our machines and production line. For example, we have already invested more than RMB10 millions in wastewater treatment. It is uncertain about the time and money we will continue to invest to fix the total production line. In addition, we are cautious in choosing raw materials. We prefer to consume high purity tantalite and columbite instead of tin slag or low grade ore as the latter would cause increasing environmental cost.

Asian Metal: The increasing environmental protection cost will be the common issue faced by Chinese tantalum and niobium smelters. Can you introduce some details about the adding cost for the environmental protection?
Chen: First, we see adding cost in processing ores and dealing with solid waste. We need to use around 3-4t of hydrated lime (RMB800/t) when we process 1t of the tantalum ore, so the adding cost would be RMB2,400-3,200/t. We also need to transport our solid waste(Transportation fee will be RMB100/t), so the adding cost will be RMB800-1,000/t.
At the same time, the new policy requires higher degree of automation in waste gas treatment. In the past, we just need to train the workers about the related operation procedures. However, we need to add new machines to process it with a total investment of RMB10 millions and depreciation cost is around RMB2-3 millions per year. In addition, upgrading for old machines into new machines also need extra cost. One old machine price would be RMB10,000-20,000 while one new machine price would be around RMB30,000-40,000.
